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针对修河三角圩因建设标准偏低、设施不配套,在历年高水位运行时均不同程度出现河岸坍塌、堤身及堤基渗漏等险情的问题,选取三角联圩典型堤段,基于堤防工程地质及水文地质条件,给出了堤坡边界条件、工况条件、有限元模型及堤坡稳定性分析方法,运用有限元程序对水位骤升及持续高水位条件下堤坡的稳定性进行了计算分析,获得了堤坡渗流场、渗透坡降及边坡安全系数的变化规律。结果表明,在给定的高水位及其相应的持续时间内,堤坡安全性、稳定性良好。
Due to the low standard of construction and the unavailability of facilities in the tributary of the Xiu River, the problems of bank collapse, leakage of dykes and levee foundation occurred in different degrees during the years of high water level operation. The engineering geological and hydrogeological conditions are given. The conditions of embankment boundary conditions, working conditions, finite element model and embankment slope stability analysis are given. The stability of embankment slopes under the condition of sudden rise of water level and continuous high water level By calculation and analysis, the variation law of embankment seepage field, infiltration slope and slope safety factor was obtained. The results show that the bank slope has good safety and stability at a given high water level and its corresponding duration.